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But the technology - and especially the environmental aspects of the - lead to heated discussions. led inc Proponents see an efficient technologies with lower CO2 emissions than coal, for example, while opponents fear the groundwater. Let's get the engineers on the field
Engineer the Future kicks the debate
It is an important point that shale gas must be solely a transitional arrangement until CO2-neutral energy sources to take over. The world's politicians led inc have agreed that global led inc warming must be limited to a maximum of two degrees Celsius. The hope is that a moderate hot flushes do not jeopardize the planet's fragile climate completely out of balance. And the gas may be a part of the solution. FREE offers here four good reasons to allow drilling for shale gas in Denmark.
The first good reason is that with the speed we now produce energy from renewable sources, we can not stop the rise in global warming. State revenue from shale gas, however, can be used to accelerate the expansion of Denmark's led inc energy supply to renewable energy and other CO2-neutral energy led inc sources.
The second reason that shale gas is a good idea, is that shale gas (and gas in general) emits half as much CO2 as coal does. If gas can displace coal and oil, the world in a quick and relatively inexpensive way to reduce its CO2 emissions from energy by up to 30 per cent. In the USA, the high incidence of shale gas resulted in a reduction in CO2 emissions by 8 per cent. in a few years.
A third reason is that we in Denmark led inc have as much distance between groundwater resources and shale layer that there is no risk of contamination of groundwater through the soil layers. Here it is vital before drilling to be made thorough Environmental Impact Assessments led inc order to include by the drill design and the like. eliminates the risk of groundwater contamination. Drilling technique is not very different from a conventional oil - or gas drilling. Therefore, we know very well how to get the gas up.
The fourth reason is that the more gas in the energy market the cheaper gas and the greater the likelihood that gas will displace coal. In the United States, the increased supply of gas got gas prices to fall in 2005 that cost 10 $ / MBtu to the today costs less than 4 $ / MBtu. This fall, coupled with stricter environmental standards for coal-fired power-plants, has made the gas price-competitive with coal.
The IPCC har drawn attention to an apparent leveling-off of globally-Averaged temperatures over the past 15 years or so. Measuring the duration of the hiatus kill implications for Determining if the Underlying trend has changed, and in order of evaluating climate models ...
But do this politically accurate, current indgansbøn rest, of course, must be within a reasonable time frame for solutions so that the world's energy needs can be met from non-fossil sources, incl. fission / fusion. But in the meantime, we must, of course, the sound (and responsible) way exploit the natural resources that we as a nation have access to - be it under the seabed as well as below ground level.
Shale gas contributes to global warming. Shale gas is a fossil fuel that is likely to deceive led inc even more to global warming than either coal or oil. Methane is a greenhouse gas, which is much more reactive than CO2. Even small releases of gas, as known from eg shale gas extraction in the United States, can bring the gas climate impact up on the side of coal. In addition to the marginal costs associated with the mining of coal is so small that cheap gas does not reduce the extraction led inc of coal, but only moves the market.
The burning of shale gas means less CO2 but larger climate impact When you talk climate effects, one needs to look at the CO2 equivalent to pure CO2 emissions. That unit of the weighted sum of various greenhouse gases. The gases are weighted according to their individual impact on the greenhouse effect. Methane (CH4) contributes 21 times more to global warming than CO2, so one tonne of CH4 = 21 tonnes of CO2 equivalents.
The large distance between the shale layer and groundwater is a disadvantage. I do not know anyone who claims that the risk of groundwater contamination is about pollution led inc rises through the ground from where fracture. The contamination occurs by breakage of wires and installations and spills on the surface. When in Denmark led inc have to drill much deeper than, for example. in the United led inc States, this means that you get down where there are extreme conditions of high pressure and high heat. This means that you must use a higher pressure that you have to use some other, possibly more toxic chemicals and that means that the chemicals react unpredictably, so you do not know what you are faced with when they
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